it increases because your body needs blood and oxygen pumping around your body more this is because the muscels in your body have been used more and therefore needs more oxygen
Your heart starts to beat at faster rate. The heart rate may go up to 180 beats per minute.
It's not good at all.
The nervous system causes the heart to beat faster when you exercise. It itself is not an organ but a system.
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The heart beat can increase due to stress and exercise. There are many other factors that can increase heart rate.
runing
when we exercise our heart beat increases due to the reason that during exercise the body need more oxygen which is carried by blood so more and more blood carrying oxygen is to move to the part for which we are doing exercise and so more of the work heart have to do to pump the blood so ultimately our heart beat increases
That depends on the nature of your exercise. Heart beat rises to meet your metabolic requirements. Normally the heart rate goes up to 100 to 160 per minute. It may go up to 180 beats per minute in severe exercise.
your heart beat goes higher
It does not beat
start digging
At the normal rate.